田亚斌,齐学义.轴向应力对多级离心泵转子临界转速的影响[J].农业机械学报,2013,44(5):55-58,88.
Tian Yabin,Qi Xueyi.Influence of Axial Stress on Critical Rotational Speed of Multistage Centrifugal Pump Rotor[J].Transactions of the Chinese Society for Agricultural Machinery,2013,44(5):55-58,88.
摘要点击次数: 3845
全文下载次数: 1604
轴向应力对多级离心泵转子临界转速的影响   [下载全文]
Influence of Axial Stress on Critical Rotational Speed of Multistage Centrifugal Pump Rotor   [Download Pdf][in English]
  
DOI:10.6041/j.issn.1000-1298.2013.05.011
中文关键词:  多级离心泵  动力特性  轴向应力  临界转速  流固耦合
基金项目:国家自然科学基金资助项目(51068019)
作者单位
田亚斌 兰州理工大学 
齐学义 兰州理工大学 
中文摘要:借助ANSYS软件,运用有限元方法,在计算3×8 3/4-10stg HSB型高速多级离心泵转子干态临界转速的基础上,又分别计算了转子在湿态下支承刚度、陀螺力矩、流体软化作用、口环支承等对转子临界转速的影响,此后再计入轴向应力对转子临界转速的影响。结果表明,浸液转子仅考虑流固耦合作用计算出的临界转速仍然存在着偏差;在流固耦合的基础上,再考虑轴向应力对转子动力特性的影响后,一阶临界转速提高了21%,其余各阶也有所提高,说明轴向应力对转子系统的临界转速有较大影响,且轴向应力对提高转子的稳定性有积极的作用。
Tian Yabin  Qi Xueyi
Lanzhou University of Technology;Lanzhou University of Technology
Key Words:Multistage centrifugal pump  Dynamic characteristics  Axial stress  Critical speed  Fluid-solid coupling
Abstract:The dry state critical speed of the rotor of the high speed multistage centrifugal pump of 3×8 3/4-10stg HSB was first calculated by means of the method of finite element and ANSYS software. After that, the effects on the critical speed of the rotor impressed by the support stiffness, gyroscopic couple, fluid softening effect, and mouth ring support, were computed respectively. Finally, the effect of the axial stress on the critical speed of the rotor was computed. The results showed that critical speed of the immersion rotor still existed deviation when only considering the fluid-solid coupling effect, and that considering the effect of the axial stress on the rotor dynamic characteristics the first critical speed was improved by 21% based on the fluid-solid coupling, and the ones of other order were also improved. It illustrated that the axial stress had an important effect on the critical speed of the rotor system and could improve the rotor stability.

Transactions of the Chinese Society for Agriculture Machinery (CSAM), in charged of China Association for Science and Technology (CAST), sponsored by CSAM and Chinese Academy of Agricultural Mechanization Science(CAAMS), started publication in 1957. It is the earliest interdisciplinary journal in Chinese which combines agricultural and engineering. It always closely grasps the development direction of agriculture engineering disciplines and the published papers represent the highest academic level of agriculture engineering in China. Currently, nearly 8,000 papers have been already published. There are around 3,000 papers contributed to the journal each year, but only around 600 of them will be accepted. Transactions of CSAM focuses on a wide range of agricultural machinery, irrigation, electronics, robotics, agro-products engineering, biological energy, agricultural structures and environment and more. Subjects in Transactions of the CSAM have been embodied by many internationally well-known index systems, such as: EI Compendex, CA, CSA, etc.

   下载PDF阅读器